Because there is a contingent of people that believe that Cern will open the bottomless pit and allow the anti-christ/demons to come through and start the end times tribulation period, and yes I'm serious. There are hundreds of videos about it. The book of Revelation discusses the trumpets sounding that begins the end times. If you search first trumpet, it lands on the Cern super collider.
This type of thing is all over the internet. People may not fully comprehend why September 23rd is the next doom date, there are a ton of reasons why that date has been set. What is in front of Cern? A statue of the goddess Shiva, the destroyer of worlds.
I'll give you another one that contributed to what is going on right now. This guy came out and announced the world has 500 days to avert a climate chaos. If you count 500 days from the day he said it, it falls on September 23rd, 2015. This contributed to the idea that an asteroid would hit the planet next month and cause a climate chaos.